Any thoughts, please? :) On Mon, Aug 24, 2015 at 3:41 PM, Ajay Garg <[email protected]> wrote:
> Hi All. > > I am sorry for posting on this list, as the subscription-pages(s) on the > 3GPP-mailing-lists do not open (the server seems to be down). > Other than that, people on this list are the best experts with Modems :) > > > We are writing an application that would ultimately be hosted in > embedded-environments (micro-controller interfaced with a GPRS-modem > chipset), and we were wondering if it would be feasible to integrate the > TCP/IP stack in our application, so that the application becomes > modem-vendor-agnostic. > > Thereafter, we would talk with external Web-Server using the following > algorithm :: > > > 1) > Create a connection between Modem with the APN, using *only* standard > Hayes Command(s), mostly AT+CGDONT > > 2) > Thereafter, the modem would be switched (automatically) into data-mode. > > 3) > Create packets in our application, and wrap the TCP and IP headers within > our application using the integrated TCP-IP stack (for eg. lwIP in our > application. > > 4) > Create and use TCP-contexts, by sending/receiving the packets of step 3) > while the modem remains in data-mode. > > > Is our approach worth the effort? > Are a good number of modems expected to behave fine by our algorithm? Or > there is too much variety of modems, so much so that no single general > algorithm would suffice ? > > > We will be grateful to listen to your experiences. > > > Thanks and Regards, > Ajay > > -- Regards, Ajay
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